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  1. #1

    Member Since
    Aug 19, 2008
    ATI Radeon X1900 XT PowerPC G5 Leopard Issues
    I have a Power Mac G5 2Ghz (not a Mac Pro) with an ATI Radeon X1900 XT in addition to the original NVIDIA GeForce 6600LE graphics card. All was wonderful, until I installed Leopard. Then any monitor connected to the ATI was showing thin blue horizontal lines and the machine locked up the screen saver kicked in. It would also lock up when dragging an application to or from the ATI connected monitor. I opened tickets with both AMI and Apple, and they both point fingers at each other. I've cleaned the card several times and the latest AMI drivers have been installed, to no avail.

    I do not want to back off of Leopard if at all possible. Has anyone experienced these issues and if so is there a resolution?


    my machine specs below:
    Model Name: Power Mac G5
    Model Identifier: PowerMac11,2
    Processor Name: PowerPC G5 (1.0)
    Processor Speed: 2 GHz
    Number Of CPUs: 2
    L2 Cache (per CPU): 1 MB
    Memory: 2 GB
    Bus Speed: 1 GHz
    Boot ROM Version: 5.2.7f1

    ATI Radeon X1900 XT:

    Chipset Model: ATY,RadeonX1900
    Type: Display
    Bus: PCIe
    Slot: SLOT-1
    PCIe Lane Width: x16
    VRAM (Total): 256 MB
    Vendor: ATI (0x1002)
    Device ID: 0x7240
    Revision ID: 0x0000
    ROM Revision: 113-A52070-109

  2. #2

  3. #3

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac i5 2.7GHz, 16GB memory, OS 10.11.1.
    When owned a Dual Core G5 had this problem. Is the card a flashed PC card or the Radeon X1900GT? The flashed card caused precisely the problems you describe whereas a specific Mac card did not.

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